Question: Who was the disciple and mentor of Wilhelm Grosz?
Paraphrase: Who was Wilhelm Grosz's disciple and mentor?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q5772932 wdt:P1066 ?X . ?X wdt:P802 ?answer}
Answer: Clara Haskil, Rudolf Serkin, Hans Gál, George Szell, Wilhelm Grosz